<?php
define('BACKUP_RSYNC' , 1);
define('BACKUP_RSYNCAUTH', 2);
define('BACKUP_SCP', 3);

/**
 * Perform a backup for the VE.
 * There are different possibilities to perform a backup. The first
 * argument must specify the method to be used. The remaining
 * arguments then depend on the chosen method:
 *
 * - BACKUP_RSYNC - Use rsync: $host
 * - BACKUP_RSYNCAUTH - Use rsync with auth: $host, $user, $password
 * - BACKUP_SCP -  Use scp, parameters: $host
 */
function makeBackup ()
{
    $args = func_get_args();
    $cmd = '';
    switch ($args[0])
    {
        case BACKUP_RSYNC:
            $cmd = 'rsync' . $args[1];
            break;

        case BACKUP_RSYNCAUTH:
            $cmd = 'rsync --user '.$args[2].' --password '.$args[3].' '.$args[4];
            break;

        // usw...
    }
    exec($cmd);
}